sonys systems are more secure than they were thats for sure, but they could put in place a system that blocks logging in to the account for x amount of time after x amount of failed attempts.

Problem with that is someone would have to input the wrong User/Pass combo x amount of times when in reality, this is more likely an old list of User/Pass (one Username with an associated Password) attempted, and the successful ones logged for retry with the failed ones binned as unsuccessful.

You're proposal is assuming several attempts are being made on a single account when actually multiple accounts are being attacked once and after a success or fail, forgotten.